Ask any history teacher what goes wrong most often in student essays and thesis statements come up fast. Students write a topic instead of a claim, or a claim so safe no one could disagree. Loewen would probably say they are imitating their textbooks.

Textbooks describe. They rarely argue. Students who read mostly descriptive writing tend to produce descriptive theses, so the fix is partly a matter of exposure and partly a matter of feedback.

Feedback that says "needs a stronger thesis" does not help. Students do not know what stronger means. Useful comments name the specific problem and show a way forward.

Here is a set of common thesis problems and the kind of comment that works for each.

Common Thesis Problems and Comments

Keep comments short and tied to the sentence itself. A model rewrite, even a rough one, is more useful than a lecture. Students learn by seeing the change.

• Topic only: "This names a subject. What do you want to argue about it?"
• Too obvious: "Could anyone disagree with this? Try taking a side."
• Too broad: "Narrow this to one cause, group, or time period."
• No reasoning: "Add a because clause that previews your explanation."
• Mismatch: "Your essay argues something different. Which version do you want?"

Teach the Formula Before You Grade

A simple frame, such as "Although [counterargument], [claim] because [reason]," gives students a starting point. Introduce it early and let them adapt it. Many will outgrow it by midyear.

Show sample theses at three quality levels and have students rank them. The discussion clarifies what strong looks like. It is also a fast way to reset expectations before a big essay.

Make Revision Part of the Process

Ask students to submit their thesis for feedback before writing the whole essay. A five-minute read of a single sentence is much cheaper than grading a full draft. It also prevents students from building an essay on a shaky foundation.

AI-assisted tools can give quick thesis feedback aligned to your rubric, which you can review and adjust. That makes early check-ins possible even with 150 students.

Tracking Improvement

Keep a simple record of thesis scores across assignments. Students who improve from topic statements to arguable claims are showing real growth, and you should tell them so. Progress is motivating, particularly for students who think they are not good at writing.

Share patterns with the class without naming individuals. If half the room struggles with overly broad claims, spend ten minutes on narrowing. Whole-class fixes often beat dozens of repeated comments.